Finding the Fourth Proportional to 6,485.82, 9,728.32 and 3,196

Step by Step Solution

1. Step 1: Write the proportion equation
   6,485.82 : 9,728.32 = 3,196 : x
2. Step 2: Convert to fraction form
   6,485.82/9,728.32 = 3,196/x
3. Step 3: Cross multiply
   6,485.82x = 9,728.32 × 3,196
4. Step 4: Simplify right side
   6,485.82x = 31,091,710.72
5. Step 5: Solve for x
   x = 31,091,710.72/6,485.82
6. Step 6: Final answer
   x = 4,793.80